How to pass in password using Net::SSH in Perl?

Question

I am trying to avoid using Net::SSH::Perl library since there is some problems in installing the module using CPAN. Manual install seems too troublesome when I see that it depends on a long list of other Perl modules.

What I am trying to achieve is to log into the SSH with my username and password. Then I will need to run some commands in it and retrieve some files from the server using SSH.

I know how to pass the username, hostname and command using "ssh($username."@".$ip, $command) or die "SSH fails!";". However, I keep getting this error message:

ssh: connect to host XX.XX.XX.XXX port 22: Connection refused

where XX.XX.XX.XXX is the hostname or IP address of my computer and is in the subnet as the server that I am trying to get files from.

Does anyone knows how I can pass in the password to SSH or introduce me to good tutorials on Net::SSH? Most of the tutorials I found online are on Net::SSH::Perl and not for Net::SSH.

will it be useful for you. looks like similar discussion. stackoverflow.com/questions/9766780/… — rpg
– rpg, Commented Apr 3, 2012 at 8:54
Hi. I need help on Net::SSH instead of Net::SSH::Perl as I can't install Net::SSH::Perl due to some problems with CPAN and manual install. The link you gave me is for Net::SSH::Perl. — Sakura
– Sakura, Commented Apr 3, 2012 at 10:08
Have you checked your distributions repository? Debian/Ubuntu has a lot of CPAN modules already built; for example libnet-ssh-perl and libnet-ssh2-perl are both available in UNIVERSE. — charlesbridge
– charlesbridge, Commented Apr 3, 2012 at 11:19
"Connection refused" means the client couldn't communicate with the server, not that the server rejected the credentials. — Quentin
– Quentin, Commented Apr 3, 2012 at 11:21

Adam Russell · Accepted Answer · 2012-04-06 04:02:40Z

0

Did you see this FAQ section of the Net::SSH documentation?

Q: How do you supply a password to connect with ssh within a perl script using the Net::SSH module?

A: You don't (at least not with this module). Use RSA or DSA keys. See the quick help in the next section and the ssh-keygen(1) manpage.

A #2: See Net::SSH::Expect instead.

The suggestion to try Net::SSH::Expect is a good one. It sounds, based on what you've said, that it fits your needs. I have used Net::SSH::Expect quite a bit and I can attest to its simplicity if you're just looking to get something done quickly

answered Apr 6, 2012 at 4:02

Adam Russell

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